Retrofitted elevator with micro ramp directly arriving original gate of resident

The invention provides a retrofitted elevator with a micro ramp directly arriving an original gate of a resident. The retrofitted elevator is located on the outer side the half floor platform positionof an old building, the height difference between an elevator entrance platform and a residential entrance door platform is 10-900 millimeters, one side stairs in two side stairs are removed, a non-stair ramp walkway between the entrance door platform and the elevator entrance platform is installed, the ramp ratio of the non-stair ramp walkway is less than 15%, and the other side stairs are maintained or newly built, and new stairs extend until being connected with the elevator entrance platform. The retrofitted elevator with the micro ramp directly arriving the original gate of the residenthas the effects that walking up and down a flight of stairs for elevator taking of the resident is not required, and the difficult problem of going upstairs and downstairs of the old is completely solved; an elevator corridor